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MN E m V. 0 M L &A m MA M PB BM H m d O M 0 m No. 369,283. Patented Aug.30, 1887.

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' E. B. COXE & S. SALMON.

MECHANICAL MOVEMENT.

PatentedAug 30, .1887;

N. PEIERS. PhotvLn (No Model.) 3 Sheets-Sheet 3,

E. B. OOXE & s. SALMON. MECHANICAL MOVEMENT.

No. 369,233. 3 Patented Aug. 30, 1887.

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UNITED STATES PATENT OFFICE.

EOKLEY B. OOXE AND SAMUEL SALMON, OF DRIFTON, PENNSYLVANIA; SAID SALMONASSIGNOR TO SAID COXE.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 369,233, dated August30, 1887.

' Application filed April 25, 1887. Serial No. 236,012. (No model.)

To all whom it may concern:

Be it known that we, EoKLEY B. COX E and SAMUEL SALMON, of Drifton, inthe county of Luzerne, and in the State of Pennsylvania, have inventedcertain new and useful Improvements in Mechanical Movements; and we dohereby declare that the following is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which Figure 1 is a perspective view of a plate which is supported byand horizontally movable upon our improved bearings. Fig. 2 is anenlarged perspective view of the roller and one of the bearings whichare preferably employed, said parts being separated from each other.Fig. 3 is a side elevation of the same, with its bearings in section;and Figs. 4 and 5 are like views ofmodifications of said parts.

Letters of like name and kind refer to like parts in each of thefigures.

In the use of screening apparatus and in various kinds of mechanismit isdesirable that a horizontal gyratory motion should be produced, and forsuch purpose the part to be u gyrated has heretofore been suspended bychains or upon pivoted bars; but in each instance the result has beenthat the part gyrated had more or less vertical motion and that aconsiderable amount of friction and wear was caused to the bearing orsuspensory parts. To obviate these obj ections is the design of ourinvention, which invention consists, principally, as an improvement inmechanical movements, in two relatively movable parts which haveparallel inner faces, in combination with a double cone that is placedbetween and has rolling contact with the inner faces of said parts, andis adapted to furnish a rolling gyrating bearing and support for theupper part, substantially as and forthe purpose hereinafter specified.

It consists, further, as an improvement in mechanical movements, in tworelatively movable parts whichupon orwithin their parallel inner facesare each provided with a circular track or bearing, in combination witha double cone that is placed between and has rolling contact with saidtracks, and is adapted to furnish a rolling gyrating bearing for theupper part, substantially as and for the purpose hereinafter shown.

It consists, further, as an improvement in mechanical movements, in tworelatively movable parts which have parallel inner faces, and are eachprovided within or upon its inner face with a circular guide track orhearing, in combination with a double cone that is placed between andhas rolling contact with each of said faces and guidetracks, and isadapted to furnish a rolling gyrating bearing for the upper part,substantially as and for the purpose hereinafter set forth.

7 It consists, further, as a means for enabling a relatively gyratorymotion to be produced between two parts which have parallel inner 1faces, and in combination therewith, a double cone that is placedbetween and has rolling contact with said faces, substantially as andfor the purpose hereinafter shown and described.

It consists, further, as a means for supporting a part parallel with andenabling the same to be gyrated over a relatively stationary part, inthe combination therewith of two or more double cones which are placedbetween and have rolling contact with the contiguous parallel faces ofsaid parts, substantially as and for the purpose hereinafter specified.

It consists, further, as a means for supporting a part parallel with andgyrating the same over a relatively stationary part, in the combinationtherewith of two or more double cones that are placed between and haverolling contact with'thc contiguous parallel faces of said parts, and acrank which engages with said relatively movable part and operates tomove the same bodily in a circular plane, substantially as and for thepurpose hereinafter shown.

It consists, further, as a means for supporting a part parallel with andenabling the same to be gyrated over a relatively stationary partwithout change of circumferential position, in the combination therewithof two or more double cones that are placed between the contiguousparallel faces of said parts and have rolling contact with parallelcircular guide-tracks which are provided upon or within each of saidfaces, substantially as and for the purpose hereinafter set forth.

It consists, finally, as a means for supporting a part parallel with andgyrating the same over a relatively stationary part without change ofcircum ferential position, in the combination therewith of two or moredouble cones that are placed between and have rolling contact withparallel circular guidetracks which are provided upon or within thecontiguous parallel faces of said parts, and a crank that engages withsaid relatively movable part and operates to move the same bodily in acircular plane, substantially as and for the purpose hereinafter shownand described.

As the special organization to which our invention is applied forms nopart of such invention, it will be sufficient to illustrate itsoperation in connection with a supportingtable that is adapted toreceive any desired machine, which table consists of a rectangularplate, A, that has any required thickness and corresponds in generalsize and proportions to the like features of a second plate, B, which issupported in a horizontal position and is usually fixed in place.

Near each corner upon the upper face of the base-plate B is secured acircular plate, 0, which at a point midway between its center andperiphery is provided with an annular flange, c, that extends upward andin crosssection has the form of an inverted letter V, with the pointpreferably cut away, so as to produce at such point a horizontalbearing.

Upon the plate 0 is placed a double cone, D, which within each of itsconical faces (1 is provided with a circumferential groove, d, thattransversely corresponds to the shape and size of the flange 0, so thatwhen said cone is placed upon the circular plate 0 its point willcoincide with the axis of the latter and its face will rest upon theface of said plate upon each side of said flange, and its said groovewill fit over said flange with the sides of said parts in contact, asshown in Fig. 3. If, now, said cone is rotated, it will roll around saidflanged plate without change thereon of radial position, and its entirebearing-surface will have contact with the corresponding surface of saidplate without slipping and with no friction other than such as isproduced by the rolling together of two surfaces.

The plate or table A is provided with four of the circular flangedplates 0 and G, which are attached to the lower face of said table inpositions that correspond tothe positions of the like plates upon thebase 13 and rest upon and engage with the upper portions of thecone-rollers D, their bearings upon the faces of said rollers beingprecisely the same as in case of the lower portions of said cones andtheir plates. As thus arranged, the entire weight of the table issupported by the cone-rollers, and said table may be gyratedhorizontally in either direction by applying sufficient power toovercome its inertia and cause said cones to roll around their lowertracks. As the axis of each cone is oblique to the plane of its track,it will be seen that when traveling around said track the centralportion of said cone will describe a circle the diameter of which willdetermine the amount of movement of said table in opposite directions.As the contact of said cones with both series of bearingplates is arolling contact, the friction caused by their movements is so slight asto render necessary for the movement of the table the expenditure of noappreciable amount of power over what would be required to effect suchmovement were said table suspended by the theoretically frictionlessspring of a clockpendulum. By the employment of cones and bearing-plateshaving hardened surfaces the wear upon the same will become practicallynothing,and the durability of the mechanism-- if breakage isprevented-will exceed that of any possible construction in which thereis sliding contact between the bearing-surfaces.

The movement of the table A is preferably secured by means of a crank,E, which has its shaft journaled at or near the center of the base B,and has its upper end or pin, 0, journaled within the center of saidtable. The throw of the crank coincides with the oscillations of thecone-rollers D and D, so that said crank is subjected to no strain otherthan such as is necessary in order to start said table and keep it inmotion. Any desired means may be employed for rotating said crank-shaft;but a belt and pulley are preferably used.

The annular flanges c of the plates G operate to prevent radialdisplacement of the conerollers and are preferably employed; but suchresult can be attained by other forms, if desired. In Fig. 4 is shown amodification in the construction of said parts, in which the roller hasplane conical faces d and d and a cylindrical periphery, (1, while thebearingplate has a plane face surrounded by an annular flange, c, thathas a face, 0', which inclines upward and outward at the precise anglenecessary to enable it to receive rolling contact from the periphery dof said roller.

In Fig. 5 is seen another modification, in which the faces (Z and d ofthe roller are plane, and at the end or apex of each is provided a smallcylindrical boss, d, that is in a line axially with the axis of saidroller and terminates in a cone, d, as shown. The bearing-plate C has aplane upper face, and at its center is provided with a cylindricalrecess, 0, which is in a line axially with the axis of said plate, andhas such size as to enable it to receive the boss d and enable theconical end (2 of the same to bear against and have rolling contact withits sides, as shown.

Having thus thus described our invention, what we claim is-- 1. As animprovement in mechanical movements, two relatively movable parts whichhave parallel inner faces, in combination with a double cone that isplaced between and has rolling contact with the inner faces of saidparts, and is adapted to furnish a rolling gyrating bearing and supportfor the upper part, substantially as and for the purpose specified.

2. As an improvement in mechanical movements, two relatively movableparts which upon or within their parallel inner faces are a eachprovided with a circular track or bearing, in combination with adoublecone that is placed between and has rolling contact with said tracks,and is adapted to furnish a rolling gyrating bearing for the upper part,substantially as and for the purpose shown.

3. As an improvement inmechanical movements, two relatively movableparts which .have parallel inner faces and are each procombinationtherewith, a double cone that is placed between and has rolling contactwith said faces, substantially as and for the purpose shownanddes'cribed.

5. As a means for supporting a part parallel with and enabling the sameto be gyrated over a relatively stationary part. the combi nationtherewith of two or more double cones which are placed between and haverolling contact with the contiguous parallel faces of said parts,substantially as and for the purpose specified.

6. As a means for supporting apart parallel with and gyrating the sameover a relatively stationary part, the combination therewith of two ormore double cones that are placed between and have rolling contact withthe contiguous parallel faces of said parts,and a crank which engageswith said relatively movable part and operates to move the same bodilyin a circular plane, substantially as and for the purpose shown.

7. As a means for supporting a part parallel with and enabling the sameto be gyrated over a relatively stationary part without change ofcircumferential position, the combination therewith of two or moredouble cones that are placed between the contiguous parallel faces ofsaid parts and have rolling contact with parallel circular guide-trackswhich are provided upon or within each of said faces, substantially asand for the purpose set forth.

8. As a means for supporting a part parallel with and gyrating the sameover a relatively stationary part without change of circumferentialposition, the combination therewith of two or more double cones that areplaced between and have rolling contact with parallel circularguide-tracks which are provided upon or within the contiguous parallelfaces of said parts, and a crank that engages with said relativelymovable part and operates to move the same bodily in a circular plane,substantially as and for the purpose shown and described.

In testimony that we claim the foregoing we have hereunto set our handsthis 7th day of April, 1887.

EOKLEY B. OOXE. SAMUEL SALMON.

